Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Trong ch\u01b0\u01a1ng tr\u00ecnh H\u00f3a h\u1ecdc \u1edf c\u1ea5p 2, b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m quen v\u1edbi 1 kh\u00e1i ni\u1ec7m \u0111\u00f3 ch\u00ednh l\u00e0 \u0111\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc. C\u00f3 ch\u1ea5t s\u1ebd b\u1ecb h\u00f2a tan trong n\u01b0\u1edbc nh\u01b0ng c\u0169ng c\u00f3 ch\u1ea5t th\u00ec kh\u00f4ng. \u0110\u1ed3ng th\u1eddi \u0111\u1ed9 tan c\u1ee7a c\u00e1c ch\u1ea5t c\u0169ng s\u1ebd kh\u00f4ng gi\u1ed1ng nhau. V\u1eady l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u00f3 c\u00f3 ph\u1ea3i l\u00e0 ch\u1ea5t tan hay kh\u00f4ng v\u00e0 c\u00e1ch t\u00ednh \u0111\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc nh\u01b0 th\u1ebf n\u00e0o? H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u.<\/p>\n\n\n\n
Kh\u00e1i ni\u1ec7m \u0111\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc<\/p>\n\n\n\n
\u0110\u1ed9 tan ch\u00ednh l\u00e0 s\u1ed1 gam m\u00e0 m\u1ed9t ch\u1ea5t n\u00e0o \u0111\u00f3 tan trong n\u01b0\u1edbc v\u00e0 t\u1ea1o ra dung d\u1ecbch \u0111\u01b0\u1ee3c b\u00e3o ho\u00e0 trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u00f4i tr\u01b0\u1eddng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n
\u0110\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc c\u0169ng ch\u00ednh l\u00e0 \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t \u0111\u00f3. \u0110i\u1ec1u ki\u1ec7n l\u00e0 trong 100mg dung d\u1ecbch n\u01b0\u1edbc, m\u1ee9c nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh v\u00e0 ch\u00fang s\u1ebd t\u1ea1o ra dung d\u1ecbch b\u00e3o ho\u00e0 khi kh\u00f4ng th\u1ec3 ti\u1ebfp t\u1ee5c ta n\u1eefa.<\/p>\n\n\n\n
Tuy nhi\u00ean, nh\u01b0 \u0111\u00e3 n\u00f3i \u1edf tr\u00ean \u0111\u00f3 ch\u00ednh l\u00e0 kh\u00f4ng ph\u1ea3i ch\u1ea5t n\u00e0o c\u0169ng c\u00f3 th\u1ec3 ho\u00e0 tan \u0111\u01b0\u1ee3c trong n\u01b0\u1edbc. V\u1eady l\u00e0m sao \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t? C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 \u0111\u01b0a ra 3 y\u1ebfu t\u1ed1 c\u1ee5 th\u1ec3 sau \u0111\u00e2y \u0111\u1ec3 gi\u00fap ch\u00fang ta c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 tan trong n\u01b0\u1edbc c\u1ee7a m\u1ed9t ch\u1ea5t d\u1ec5 d\u00e0ng. T\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u1eb7t trong \u0111i\u1ec1u ki\u1ec7n v\u1edbi 100g n\u01b0\u1edbc.<\/p>\n\n\n\n
N\u1ebfu ch\u1ea5t \u0111\u00f3 h\u00f2a tan \u0111\u01b0\u1ee3c >10g th\u00ec \u0111\u00f3 ch\u00ednh l\u00e0 ch\u1ea5t tan hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ch\u1ea5t d\u1ec5 tan.<\/p>\n\n\n\n
N\u1ebfu ch\u1ea5t \u0111\u00f3 b\u1ecb h\u00f2a tan <1g th\u00ec \u0111\u00f3 l\u00e0 ch\u1ea5t tan \u00edt.<\/p>\n\n\n\n
N\u1ebfu ch\u1ea5t \u0111\u00f3 ch\u1ec9 h\u00f2a tan \u0111\u01b0\u1ee3c < 0,01g th\u00ec \u0111\u00e2y l\u00e0 ch\u1ea5t kh\u00f4ng tan.<\/p>\n\n\n\n
\u0110\u1ed9 tan v\u00e0 t\u00edch s\u1ed1 tan l\u00e0 2 kh\u00e1i ni\u1ec7m ho\u00e0n to\u00e0n kh\u00e1c nhau. T\u00edch s\u1ed1 tan l\u00e0 t\u00edch \u0111\u01b0\u1ee3c t\u00ednh ra gi\u1eefa s\u1ed1 c\u00e1c n\u1ed3ng \u0111\u1ed9 c\u1ee7a nh\u1eefng ion t\u1ef1 do trong dung d\u1ecbch b\u00e3o h\u00f2a trong m\u1ed9t \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh c\u00f9ng v\u1edbi c\u00e1c ch\u1ec9 s\u1ed1 c\u1ee7a ion trong ph\u00e2n t\u1eed.<\/p>\n\n\n\n
\u0110\u0103ng ky\u0301 ho\u0323c th\u01b0\u0309 mi\u00ea\u0303n phi\u0301 m\u00f4n Ho\u0301a ho\u0323c t\u01b0\u0300 l\u01a1\u0301p 8 \u0111\u00ea\u0301n l\u01a1\u0301p 12<\/p><\/blockquote>\n\n\n\n
T\u00ednh tan c\u1ee7a c\u00e1c h\u1ee3p ch\u1ea5t trong n\u01b0\u1edbc<\/p>\n\n\n\n
Sau \u0111\u00e2y s\u1ebd l\u00e0 t\u00ednh tan c\u1ee7a c\u00e1c nh\u00f3m ch\u1ea5t c\u00f3 trong n\u01b0\u1edbc:<\/p>\n\n\n\n
Baz\u01a1: ph\u1ea7n l\u1edbn c\u00e1c baz\u01a1 \u0111\u1ec1u s\u1ebd kh\u00f4ng tan. Ch\u1ec9 tr\u1eeb NaOH, KOH, Ba(OH)2.<\/p>\n\n\n\n
Axit: h\u1ea7u h\u1ebft c\u00e1c axit \u0111\u1ec1u c\u00f3 th\u1ec3 tan \u0111\u01b0\u1ee3c trong n\u01b0\u1edbc, tr\u1eeb H2, SiO3.<\/p>\n\n\n\n
Mu\u1ed1i: C\u00e1c mu\u1ed1i nitrat \u0111\u1ec1u s\u1ebd tan trong n\u01b0\u1edbc.<\/p>\n\n\n\n
Ph\u1ea7n l\u1edbn c\u00e1c mu\u1ed1i clorua v\u00e0 sunfat c\u0169ng c\u00f3 th\u1ec3 tan \u0111\u01b0\u1ee3c, tr\u1eeb AgCl, PbSO4, BaSO4.<\/p>\n\n\n\n
Mu\u1ed1i cacbonat ph\u1ea7n l\u1edbn s\u1ebd kh\u00f4ng tan tr\u1eeb Na2CO3, K2CO3.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c \u0111\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc nh\u01b0 sau:<\/p>\n\n\n\n
S = (Mct\/Mdm)x100<\/p>\n\n\n\n
Trong \u0111\u00f3:<\/p>\n\n\n\n
Mct l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t tan<\/p>\n\n\n\n
Mdm l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng dung m\u00f4i<\/p>\n\n\n\n
S l\u00e0 \u0111\u1ed9 tan<\/p>\n\n\n\n
\u0110\u1ed9 tan c\u1ee7a 1 ch\u1ea5t c\u00e0ng l\u1edbn th\u00ec ch\u1ea5t \u0111\u00f3 c\u00e0ng d\u1ec5 b\u1ecb tan trong 100mg dung d\u1ecbch n\u01b0\u1edbc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. D\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c ph\u00eda tr\u00ean, ch\u00fang ta c\u00f3 th\u1ec3 \u0111\u01b0a ra \u0111\u01b0\u1ee3c m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa \u0111\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t v\u1edbi n\u1ed3ng \u0111\u1ed9 % c\u1ee7a m\u1ed9t dung d\u1ecbch b\u00e3o ho\u00e0. C\u00f4ng th\u1ee9c c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\n
C = (100S\/(100+S))<\/p>\n\n\n\n
M\u1ed9t v\u00e0i y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tan m\u1ed9t c\u1ee7a ch\u1ea5t trong n\u01b0\u1edbc<\/p>\n\n\n\n
\u0110\u1ed9 tan m\u1ed9t c\u1ee7a ch\u1ea5t trong n\u01b0\u1edbc s\u1ebd b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nh\u1eefng y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n sau \u0111\u00e2y:<\/p>\n\n\n\n
Nhi\u1ec7t \u0111\u1ed9 s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t r\u1eafn: Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng th\u00ec kh\u1ea3 n\u0103ng tan c\u1ee7a ch\u1ea5t r\u1eafn c\u0169ng s\u1ebd t\u0103ng theo v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n\n\n\n
S\u1ef1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a ch\u1ea5t kh\u00ed v\u1edbi nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t trong \u0111\u1ed9 tan: Khi nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t cao th\u00ec ch\u1ea5t kh\u00ed r\u1ea5t \u00edt c\u00f3 kh\u1ea3 n\u0103ng tan v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n\n\n\n
\u0110\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c nhau<\/p>\n\n\n\n
M\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 \u0111\u1ed9 tan<\/p>\n\n\n\n
Sau \u0111\u00e2y s\u1ebd l\u00e0 m\u1ed9t v\u00e0i d\u1ea1ng b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 tan m\u1ed9t c\u1ee7a ch\u1ea5t trong n\u01b0\u1edbc c\u0169ng nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i.<\/p>\n\n\n\n
D\u1ea1ng 1: T\u00ednh l\u01b0\u1ee3ng tinh th\u1ec3 ng\u1eadm n\u01b0\u1edbc c\u1ea7n thi\u1ebft cho th\u00eam v\u00e0o dung d\u1ecbch<\/p>\n\n\n\n
\u0110\u1ed1i v\u1edbi d\u1ea1ng b\u00e0i t\u1eadp n\u00e0y, ch\u00fang ta c\u00f3 ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i nh\u01b0 sau:<\/p>\n\n\n\n
S\u1eed d\u1ee5ng \u0111\u1ecbnh lu\u1eadt b\u1ea3o to\u00e0n kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ec3 t\u00ednh:<\/p>\n\n\n\n
(m_{ddtt} = m_{tt} + m_{ddbd})<\/p>\n\n\n\n
Trong \u0111\u00f3:<\/p>\n\n\n\n
(m_{ddtt}) l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng dung d\u1ecbch t\u1ea1o th\u00e0nh<\/p>\n\n\n\n
m_{tt} l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng tinh th\u1ec3<\/p>\n\n\n\n
(m_{ddbd}) l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng dung d\u1ecbch ban \u0111\u1ea7u<\/p>\n\n\n\n
Sau khi \u0111\u00e3 ra k\u1ebft qu\u1ea3 ti\u1ebfp t\u1ee5c \u00e1p d\u1ee5ng theo c\u00f4ng th\u1ee9c t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t tan trong dung d\u1ecbch t\u1ea1o th\u00e0nh:<\/p>\n\n\n\n
(m = m_{ctcttt} + m_{ctctddbd})<\/p>\n\n\n\n
Trong \u0111\u00f3:<\/p>\n\n\n\n
(m_{ctcttt}) l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t tan c\u00f3 trong tinh th\u1ec3<\/p>\n\n\n\n
(m_{ctctddbd}) l\u00e0 ch\u1ea5t tan c\u00f3 trong dung d\u1ecbch ban \u0111\u1ea7u.<\/p>\n\n\n\n
D\u1ea1ng 2: T\u00ednh l\u01b0\u1ee3ng ch\u1ea5t tan c\u1ea7n t\u00e1ch ra hay th\u00eam v\u00e0o khi thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9<\/p>\n\n\n\n
Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i c\u1ee7a d\u1ea1ng b\u00e0i t\u1eadp n\u00e0y nh\u01b0 sau:<\/p>\n\n\n\n
B\u01b0\u1edbc 1: T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a dung m\u00f4i v\u00e0 ch\u1ea5t tan c\u00f3 trong dung d\u1ecbch b\u00e3o h\u00f2a \u1edf nhi\u1ec7t \u0111\u1ed9 (t_{1})<\/p>\n\n\n\n
B\u01b0\u1edbc 2: \u0110\u1eb7t a (g) l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t tan A t\u00ecm sau khi thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/p>\n\n\n\n
B\u01b0\u1edbc 3: T\u00ednh l\u01b0\u1ee3ng dung m\u00f4i v\u00e0 ch\u1ea5t tan c\u00f3 trong dung d\u1ecbch b\u00e3o h\u00f2a khi \u1edf (t_{2})<\/p>\n\n\n\n
B\u01b0\u1edbc 4: \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ed9 tan hay C% trong dung d\u1ecbch b\u00e3o h\u00f2a \u0111\u1ec3 t\u00ecm \u1ea9n a.<\/p>\n\n\n\n
B\u00e2\u0323t mi\u0301 ca\u0301ch \u0111a\u0301nh bay n\u00f4\u0303i s\u01a1\u0323 m\u00f4n Ho\u0301a ho\u0323c \u2013 Vietlearn<\/p><\/blockquote>\n\n\n\n
M\u1ed9t v\u00e0i b\u00e0i t\u1eadp c\u1ee7ng c\u1ed1<\/p>\n\n\n\n
B\u00e0i 1. H\u00e3y ch\u1ecdn c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang<\/p>\n\n\n\n
\u0110\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 x\u00e1c \u0111\u1ecbnh l\u00e0:<\/p>\n\n\n\n
S\u1ed1 gam ch\u1ea5t \u0111\u00f3 c\u00f3 th\u1ec3 tan trong 100 gam dung d\u1ecbch<\/p>\n\n\n\n
S\u1ed1 gam ch\u1ea5t \u0111\u00f3 c\u00f3 th\u1ec3 tan trong 100 gam n\u01b0\u1edbc.<\/p>\n\n\n\n
S\u1ed1 gam ch\u1ea5t \u0111\u00f3 c\u00f3 th\u1ec3 tan trong 100 gam dung m\u00f4i \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a.<\/p>\n\n\n\n
D.S\u1ed1 gam ch\u1ea5t \u0111\u00f3 c\u00f3 th\u1ec3 tan trong 100 gam n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o th\u00e0nh dung d\u1ecbch b\u00e3o h\u00f2a.<\/p>\n\n\n\n
\u0110\u00e1p \u00e1n : D \u0111\u00fang.<\/p>\n\n\n\n
B\u00e0i 2. Khi t\u0103ng nhi\u1ec7t \u0111\u1ed9 th\u00ec \u0111\u1ed9 tan c\u1ee7a c\u00e1c ch\u1ea5t r\u1eafn trong n\u01b0\u1edbc<\/p>\n\n\n\n
\u0110\u1ec1u t\u0103ng<\/p>\n\n\n\n
\u0110\u1ec1u gi\u1ea3m<\/p>\n\n\n\n
Ph\u1ea7n l\u1edbn l\u00e0 t\u0103ng<\/p>\n\n\n\n
Ph\u1ea7n l\u1edbn l\u00e0 gi\u1ea3m<\/p>\n\n\n\n
Kh\u00f4ng t\u0103ng v\u00e0 c\u0169ng kh\u00f4ng gi\u1ea3m.<\/p>\n\n\n\n
\u0110\u00e1p \u00e1n : C \u0111\u00fang<\/p>\n\n\n\n
B\u00e0i 3. Khi gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 v\u00e0 t\u0103ng \u00e1p su\u1ea5t th\u00ec \u0111\u1ed9 tan c\u1ee7a ch\u1ea5t kh\u00ed trong n\u01b0\u1edbc:<\/p>\n\n\n\n
\u0110\u1ec1u t\u0103ng<\/p>\n\n\n\n
\u0110\u1ec1u gi\u1ea3m<\/p>\n\n\n\n
C\u00f3 th\u1ec3 t\u0103ng v\u00e0 c\u00f3 th\u1ec3 gi\u1ea3m<\/p>\n\n\n\n
Kh\u00f4ng t\u0103ng v\u00e0 c\u0169ng kh\u00f4ng gi\u1ea3m.<\/p>\n\n\n\n
\u0110\u00e1p \u00e1n : A \u0111\u00fang<\/p>\n\n\n\n
B\u00e0i 4. D\u1ef1a v\u00e0o \u0111\u1ed3 th\u1ecb v\u1ec1 \u0111\u1ed9 tan c\u1ee7a c\u00e1c ch\u1ea5t r\u1eafn trong n\u01b0\u1edbc (h\u00ecnh 6.5), h\u00e3y cho bi\u1ebft \u0111\u1ed9 tan c\u1ee7a c\u00e1c mu\u1ed1i NaNO3, KBr, KNO3, NH4Cl, NaCl, Na2SO4 \u1edf nhi\u1ec7t \u0111\u1ed9 10oC v\u00e0 60oC.<\/p>\n\n\n\n
\u0110\u00e1p \u00e1n:<\/p>\n\n\n\n
T\u1eeb \u0111i\u1ec3m nhi\u1ec7t \u0111\u1ed9 10oC v\u00e0 60oC ta k\u1ebb nh\u1eefng \u0111o\u1ea1n th\u1eb3ng song song v\u1edbi tr\u1ee5c \u0111\u1ed9 tan (tr\u1ee5c \u0111\u1ee9ng), t\u1ea1i giao \u0111i\u1ec3m c\u1ee7a nh\u1eefng \u0111o\u1ea1n th\u1eb3ng n\u00e0y v\u1edbi c\u00e1c \u0111\u1ed3 th\u1ecb ta k\u1ebb nh\u1eefng \u0111o\u1ea1n th\u1eb3ng song song v\u1edbi nhi\u1ec7t \u0111\u1ed9 (tr\u1ee5c ngang) ta s\u1ebd \u0111\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ed9 tan c\u1ee7a c\u00e1c ch\u1ea5t nh\u01b0 sau:<\/p>\n\n\n\n
- \u0110\u1ed9 tan NaNO3: \u1edf 10oC l\u00e0 80 g, \u1edf 60oC l\u00e0 130 g<\/li>
- \u0110\u1ed9 tan KBr: \u1edf 10oC l\u00e0 60 g, \u1edf 60oC l\u00e0 95 g<\/li>
- \u0110\u1ed9 tan KNO3: \u1edf 10oC l\u00e0 20 g, \u1edf 60oC l\u00e0 110 g<\/li>
- \u0110\u1ed9 tan NH4Cl: \u1edf 10oC l\u00e0 30 g, \u1edf 60oC l\u00e0 70 g<\/li>
- \u0110\u1ed9 tan NaCl: \u1edf 10oC l\u00e0 35 g, \u1edf 60oC l\u00e0 38 g<\/li>
- \u0110\u1ed9 tan Na2SO4: \u1edf 10oC l\u00e0 60 g, \u1edf 60oC l\u00e0 45 g<\/li><\/ul>\n\n\n\n
Tr\u00ean \u0111\u00e2y l\u00e0 kh\u00e1i ni\u1ec7m v\u1ec1 \u0111\u1ed9 tan m\u1ed9t c\u1ee7a ch\u1ea5t trong n\u01b0\u1edbc c\u0169ng nh\u01b0 c\u00f4ng th\u1ee9c t\u00ednh v\u00e0 c\u00e1ch gi\u1ea3i. Hy v\u1ecdng \u0111\u00e3 c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n th\u1eadt hi\u1ec7u qu\u1ea3 trong h\u1ecdc t\u1eadp<\/a> m\u00f4n H\u00f3a h\u1ecdc.<\/p>\n\n\n\n
<\/p>\n\n\n\n
D\u00e3y ho\u1ea1t \u0111\u1ed9ng h\u00f3a h\u1ecdc c\u1ee7a kim lo\u1ea1i \u0111\u1ea7y \u0111\u1ee7 l\u1edbp 9<\/p>\n\n\n\n
T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a phi kim \u2013 Nh<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Trong ch\u01b0\u01a1ng tr\u00ecnh H\u00f3a h\u1ecdc \u1edf c\u1ea5p 2, b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m quen v\u1edbi 1 kh\u00e1i ni\u1ec7m \u0111\u00f3 ch\u00ednh l\u00e0 \u0111\u1ed9 tan c\u1ee7a m\u1ed9t ch\u1ea5t trong n\u01b0\u1edbc. C\u00f3 ch\u1ea5t s\u1ebd b\u1ecb h\u00f2a tan trong n\u01b0\u1edbc nh\u01b0ng c\u0169ng c\u00f3 ch\u1ea5t th\u00ec kh\u00f4ng. \u0110\u1ed3ng th\u1eddi \u0111\u1ed9 tan c\u1ee7a c\u00e1c ch\u1ea5t c\u0169ng […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[8],"tags":[],"class_list":["post-748","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/748","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=748"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/748\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}